Lab 18. VRF Lite

 

Oke pada lab kita kali ini adallah VRF (Virtual Routing and Forwarding) teknologi yang memungkinkan kita membuat dua segment IP Address yang sama di dua interface router yang berbeda tapi, di Routing table yang berbeda. VRF yang dijalankan tanpa MPLS disebut dengan VRF Lite.

Oke langsung aja nih gasskeuunnn Buat VRF dan Daftarkan Interface ke dalam VRF nya masing masing, sama seperti daftarin vlan ke interface switch.

R5(ISP):
R5(config)#hostname ISP
ISP(config)#ip vrf KIRI
ISP(config-vrf)#exit
ISP(config)#ip vrf KANAN
ISP(config-vrf)#exit

ISP(config)#
ISP(config)#int f0/0
ISP(config-if)#ip vrf forwarding KIRI
ISP(config-if)#ip add 192.168.1.2 255.255.255.0
ISP(config-if)#no shutdown
ISP(config-if)#exit

ISP(config)#

ISP(config)#int f0/1
ISP(config-if)#ip vrf forwarding KANAN
ISP(config-if)#ip add 192.168.1.2 255.255.255.0
ISP(config-if)#no shutdown
ISP(config-if)#exit

ISP(config)#

ISP(config)#int g1/0
ISP(config-if)#ip vrf forwarding KIRI
ISP(config-if)#ip address 192.168.2.2 255.255.255.0
ISP(config-if)#no shutdown
ISP(config-if)#exit

ISP(config)#

ISP(config)#int g2/0
ISP(config-if)#ip vrf forwarding KANAN
ISP(config-if)#ip address 192.168.2.2 255.255.255.0
ISP(config-if)#no shutdown

ISP(config-if)#exit

Dan kita akan konfigurasi IP dan Advertise ke OSPF.

R1:
R1(config)#int f0/0
R1(config-if)#ip add 192.168.1.1 255.255.255.0
R1(config-if)#no shutdown
R1(config-if)#int loopback 0
R1(config-if)#ip address 1.1.1.1 255.255.255.255
R1(config-if)#exit

R1(config)#
R1(config)#router ospf 1
R1(config-router)#network 192.168.1.0 0.0.0.255 area 0
R1(config-router)#network 1.1.1.1 0.0.0.0 area 0

R1(config-router)#exit

R2:

R2(config)#int f0/0

R2(config-if)#ip add 192.168.1.3 255.255.255.0

R2(config-if)#no sh

R2(config-if)#exit

ISP(config)#

R2(config)#int loopback 0

R2(config-if)#ip address 2.2.2.2 255.255.255.255

R2(config-if)#exit

R2(config)#

R2(config)#router ospf 1

R2(config-router)#network 192.168.1.0 0.0.0.255 area 0

R2(config-router)#network 2.2.2.2 0.0.0.0 area 0

R2(config-router)#exit

R3:

R3(config)#int g1/0

R3(config-if)#ip add 192.168.2.1 255.255.255.0

R3(config-if)#no shutdown

R3(config-if)#int loopback 0

R3(config-if)#ip address 3.3.3.3 255.255.255.255

R3(config-if)#exit

R3(config)#

R3(config)#router ospf 1

R3(config-router)#network 192.168.2.0 0.0.0.255 area 0

R3(config-router)#network 3.3.3.3 0.0.0.0 area 0

R3(config-router)#exit

R4:

R4(config)#int g1/0

R4(config-if)#ip address 192.168.2.3 255.255.255.0

R4(config-if)#no shutdown

R4(config-if)#int loopback 0

R4(config-if)#ip address 4.4.4.4 255.255.255.255

R4(config-if)#exit

R4(config)#

R4(config)#router ospf 1

R4(config-router)#network 192.168.2.0 0.0.0.255 area 0

R4(config-router)#network 4.4.4.4 0.0.0.0 area 0

R4(config-router)#exit

Nah sekarang kita akan konfigurasi OSPF di sisi router ISP.

Kita cek:

ISP(config)#do sh vrf

Name         Default RD         Protocols Interfaces

KANAN     <not set>             ipv4         Fa0/1

                                                                Gi2/0

KIRI           <not set>             ipv4         Fa0/0

                                                                Gi1/0

ISP:

ISP#sh ip route vrf KIRI

Routing Table: KIRI

Gateway of last resort is not set

1.0.0.0/32 is subnetted, 1 subnets

O 1.1.1.1 [110/2] via 192.168.1.1, 00:14:16, FastEthernet0/0

3.0.0.0/32 is subnetted, 1 subnets

O 3.3.3.3 [110/2] via 192.168.2.1, 00:14:16, GigabitEthernet1/0

192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks

C 192.168.1.0/24 is directly connected, FastEthernet0/0

L 192.168.1.2/32 is directly connected, FastEthernet0/0

192.168.2.0/24 is variably subnetted, 2 subnets, 2 masks

C 192.168.2.0/24 is directly connected, GigabitEthernet1/0

L 192.168.2.2/32 is directly connected, GigabitEthernet1/0

ISP#sh ip route vrf KANAN

Routing Table: KANAN

Gateway of last resort is not set

2.0.0.0/32 is subnetted, 1 subnets

O 2.2.2.2 [110/2] via 192.168.1.3, 00:06:25, FastEthernet0/1

4.0.0.0/32 is subnetted, 1 subnets

O 4.4.4.4 [110/2] via 192.168.2.3, 00:05:42, GigabitEthernet2/0

192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks

C 192.168.1.0/24 is directly connected, FastEthernet0/1

L 192.168.1.2/32 is directly connected, FastEthernet0/1

192.168.2.0/24 is variably subnetted, 2 subnets, 2 masks

C 192.168.2.0/24 is directly connected, GigabitEthernet2/0

L 192.168.2.2/32 is directly connected, GigabitEthernet2/0

Cek ping untuk sesama VRF kiri.

R1(config)#do ping 3.3.3.3

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 56/331/762 ms

Sekarang kita akan cek ke beda VRF.

R1(config)#do ping 4.4.4.4

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)